class_docstr: Dataset used to parallelize the transformation of the dataset via a DataLoader
class_docstr_tok: ["Dataset","used","to","parallelize","the","transformation","of","the","dataset","via","a","DataLoader"]
code: def __len__(self):
      return len(self.split_info)
  
file_path: vissl/extra_scripts/datasets/create_ucf101_data_files.py
imports: import argparse
  import os
  import ssl
  from contextlib import contextmanager
  from typing import List, Optional, Tuple
  from PIL import Image
  from torch.utils.data import DataLoader
  from torchvision.datasets.utils import download_url, extract_archive
  from tqdm import tqdm
label_desc: Use image node_id 4 for calling the _ExtractMiddleFrameDataset obj's underlying member method code with example usage: obj.__len__() and returns: len